If this no-code stuff isn't a bunch of malarkey, it might be lowering the barrier to self-hosting that we've all been waiting for.

And self-hosting of email isn't quite "doing everything", it's doing one or two things.

It would be, to use your analogy, like growing your own tomatoes because Walmart's suck (and they do). Homegrown tomatoes don't have that "red leather" skin, a mysterious past, and may be quite inexpensive.

You can still get your Chinese made shirts, shoes, pants, and other inexpensive Chinese made goods at Walmart. But skip the Tomatoes.